Thanks to all who responded. I appreciate the information. There doesn't seem to be much rhyme or reason to what foods I eat and what causes these cramps. However, the last attack I had came after consuming a Larabar (all natural, very tough candy bar of nuts and dates). Quite likely that was having difficulty making it through a narrow passageway, although I'd been eating them on a daily basis for weeks.
For now I'm going to stick with a low residue diet and see how that works. One of my dilemmas is that I've been on SCD since July with great results, especially with regard to weight gain. I'm also doing Remicade every 8 weeks. It's difficult to know which treatment is working and to what degree, but I can't deny that the SCD is the only thing that has allowed me to put on any real weight. If my disease is inactive at this point, then there doesn't seem to be much reason to go SCD 100%, although I still intend to stay with it about 99% of the time.